A Study on Determination of Iodine in Serum, Fresh Milk, and Feed Additive by Inductively Coupled Plasma-Mass Spectrometry

유도결합 플라스마-질량분석법에 의한 혈청, 생우유 및 사료첨가제중 요오드의 분석에 관한 연구

  • Lee, Won (Research Instituted for Basic Sciences and Department of Chemistry, Kyunghee University) ;
  • Park, Kyung-Su (Research Instituted for Basic Sciences and Department of Chemistry, Kyunghee University) ;
  • Kim, Sun-Tae (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Kim, Young-Man (Advanced Analysis Center, Korea Institute of Science and Technology)
  • 이원 (경희대학교 기초과학연구소 문리과학대학 화학과) ;
  • 박경수 (경희대학교 기초과학연구소 문리과학대학 화학과) ;
  • 김선태 (한국과학기술연구원 특성분석센터) ;
  • 김영만 (한국과학기술연구원 특성분석센터)
  • Received : 1999.06.28
  • Published : 1999.12.25

Abstract

The total iodine is determined in serum, fresh milk and feed additive by ICP-MS. The preparation involves only a 25-fold dilution with a diluent by direct nebulization in the plasma. The diluent composition is $NH_4OH$(0.5% v/v)+$CH_3OH$(5% v/v) and the abundance of iodine is measured at m/z=127. The calibration curve was linear over the ranges $0-100{\mu}g/L$ with $R^2=0.99$ for iodine. The detection limit of this method is $0.084{\mu}g/L$ for iodine. The relative error range of milk powder SRM in optimum condition is 2.30%-4.73%. The concentration ranges of iodine in the serum, fresh milk, feed additive were $12.4-40.2{\mu}g/L$, < 0.01-3.11 mg/L, < $10^{-7}-2.60g/kg$ respectively.

Keywords

Iodine;ICP-MS;Senun;Fresh Milk;Analysis

Acknowledgement

Supported by : 한국학술진흥재단

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